ASN Wikibase Occurrence # 144441
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| Date: | Thursday 15 March 2012 |
| Time: | 16:45 |
| Type: |  Robinson R22 Beta II |
| Owner/operator: | Sirius Flying LLC |
| Registration: | N290SH |
| MSN: | 4186 |
| Year of manufacture: | 2007 |
| Total airframe hrs: | 2051 hours |
| Engine model: | Lycoming O-360-J2A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Location: | Wetlands Area near Embarcadero Road and Highway 101, Palo Alto, CA -
 United States of America
|
| Phase: | Approach |
| Nature: | Training |
| Departure airport: | Palo Alto Airport, Palo Alto, California (PAO/KPAO) |
| Palo Alto Airport, Palo Alto, California (PAO/KPAO) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
On March 15, 2012, about 16:45 PDT (Pacific Daylight Time), a Robinson helicopter R22 Beta, N290SH, made a hard landing at the Palo Alto Airport, Palo Alto, California, (PAO) following a loss of engine power. The helicopter was registered to Parker Helicopter LLC, and operated by Sirius Flying, LLC, under the provisions of 14 Code of Federal Regulations (CFR) Part 91. The pilot received a minor injury; the helicopter sustained substantial damage. The local instructional flight departed Palo Alto at 16:40 PDT. Visual meteorological conditions prevailed, and no flight plan had been filed.
The operator reported that the pilot stated that while on downwind, just prior to turning base, the helicopter experienced a loss of main rotor rpm. The pilot entered an autorotation and noticed that the throttle was unresponsive. During the forced landing into a marsh area, the helicopter rolled over.
The pilot, with the assistance of legal counsel, submitted a Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2).
The pilot stated that the helicopter and engine had no mechanical failures or malfunctions during the flight until the low rotor horn activated and the engine became unresponsive.
The pilot's statement indicated that she had followed all of the procedures in the helicopter pilot operating handbook and utilized the proper checklists for the pre-flight and takeoff.
Probable Cause: The pilot's improper use of the throttle grip, which resulted in the deactivation of the rpm governor and a loss of rotor rpm.
Accident investigation:
 |
|
Sources:
NTSB
2. FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=290SH
3. http://helihub.com/2012/03/15/15-mar-12-robinson-r22-palto-alto-us-california/
4. https://www.paloaltoonline.com/news/2012/03/15/helicopter-makes-emergency-landing-in-palo-alto
5. https://sanfrancisco.cbslocal.com/2012/03/15/female-pilot-walks-away-from-palo-alto-helicopter-crash/
6. http://www.airport-data.com/aircraft/photo/000390797.html
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Mar-2012 01:07 | gerard57 | Added |
| 16-Mar-2012 08:30 | RobertMB | Updated [Time, Aircraft type, Registration, Cn, Operator, Location, Phase, Destination airport, Source, Narrative] |
| 23-Mar-2012 00:05 | Geno | Updated [Time, Operator, Source, Narrative] |
| 10-Oct-2016 15:03 | Dr.John Smith | Updated [Location, Departure airport, Destination airport, Source, Narrative] |
| 21-Dec-2016 19:26 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 27-Nov-2017 20:27 | ASN Update Bot | Updated [Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative] |
| 03-Sep-2018 22:43 | Dr.John Smith | Updated [Time, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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